How to pass 0 as a number, not null (PHP)?

[Russinating]

I've got an array that lists prices, and one is "0", ie free. The code checks if there's a discount later by checking the price, and obviously it reads 0 and therefore thinks there isn't a discount and charges full price.

Shortened code:

$postedcode = $_POST['code'];
$codelist = array("COUPONCODE" => "0");
$discountlist = array("50" => "SECRETCODE", "0" => "SECRETCODE2");

$discount = $codelist[$postedcode];

if(!$discount){
// charge full price
} else {
// charge discount price
}

How can I pass this through as a number rather than it being seen as null? Thanks!

 

[Woden]

Remove the quotation marks?

 

[Russinating]

That will set it as null as well, no?

I actually can't do this anyway as the end system (PayPal) can't deal with things for free! But, I'd still be interested to hear how you can do this anyway.

 

[Phantom Shadow]

if($discount !== false)

should still let you use 0, as the type won't match.

 

[Russinating]

Great, thanks Phantom. Will give it a go next time!